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implement support for returning several elements at once from IEnumFORMATETC (part of patch 649438)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21818 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2003-07-09 22:12:15 +00:00
parent 875c17fa8f
commit 1f1c42109d
1 changed files with 10 additions and 14 deletions
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24
src/msw/ole/dataobj.cpp
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@ -187,31 +187,27 @@ wxIEnumFORMATETC::wxIEnumFORMATETC(const wxDataFormat *formats, ULONG nCount)
STDMETHODIMP wxIEnumFORMATETC::Next(ULONG celt, STDMETHODIMP wxIEnumFORMATETC::Next(ULONG celt,
FORMATETC *rgelt, FORMATETC *rgelt,
ULONG *WXUNUSED(pceltFetched)) ULONG *pceltFetched)
{ {
wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next")); wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
if ( celt > 1 ) { ULONG numFetched = 0;
// we only return 1 element at a time - mainly because I'm too lazy to while (m_nCurrent < m_nCount && numFetched < celt) {
// implement something which you're never asked for anyhow
return S_FALSE;
}
if ( m_nCurrent < m_nCount ) {
FORMATETC format; FORMATETC format;
format.cfFormat = m_formats[m_nCurrent++]; format.cfFormat = m_formats[m_nCurrent++];
format.ptd = NULL; format.ptd = NULL;
format.dwAspect = DVASPECT_CONTENT; format.dwAspect = DVASPECT_CONTENT;
format.lindex = -1; format.lindex = -1;
format.tymed = TYMED_HGLOBAL; format.tymed = TYMED_HGLOBAL;
*rgelt = format;
return S_OK; *rgelt++ = format;
} numFetched++;
else {
// bad index
return S_FALSE;
} }
if (pceltFetched)
*pceltFetched = numFetched;
return numFetched == celt ? S_OK : S_FALSE;
} }
STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt) STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)